Level 1. SOB, BOOM, BOSOM, MOB
Level 2. DIET, TIDE, BIDE, BITE, DEBT, DEBIT, EDIT
Level 3. VOTE, DOVE, DEVOTE, VETO
Level 4. CHEST, SKETCH, SECT
Level 5. RIFT, FORT, PORT, PROFIT, RIOT, TRIP
Level 6. CLAY, CAGE, GALE, LACE, LEGACY, LACY
Level 7. REAL, VALE, LEAVE, REVEAL, EARL, EVER
Level 8. CENT, NEAT, CANE, CANT, ACCENT, ENACT